Maybe Mars got nuked.
Could be worse, look what happened to the next one out...
I would refer you to Dr. John Bradenburg’s work. this link is one of many regarding the stories of his theory. I have his original presentation somewhere in my computer. http://www.dailymail.co.uk/sciencetech/article-2843871/Ancient-Martian-civilisation-wiped-nuclear-bomb-wielding-aliens-attack-Earth-claims-physicist.html
Looks like the Mojave Desert near Baker, CA.